// Copyright 2018 Istio Authors
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//     http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.

package plugin

import (
	"context"
	"time"
)

const (
	// GoogleIAM is the name of the google IAM plugin.
	GoogleIAM = "GoogleIAM"
)

// Plugin provides common interfaces so that authentication providers could choose to implement their specific logic.
type Plugin interface {
	ExchangeToken(context.Context, string, string) (string, time.Time, error)
}
